Mikuni HSR42 Easy Carburetor Kit For Harley Big Twin Evo 1990-1999
Mikuni HSR42 Easy Kit: Evo Big Twin Carburetor Upgrade
The Mikuni HSR42 Easy Carburetor Kit is the most popular and effective performance upgrade for 1990-1999 Harley-Davidson Evolution (Evo) Big Twin engines. This HSR42 smoothbore carburetor replaces the restrictive stock CV carb, delivering dramatic gains in horsepower, torque, and overall engine responsiveness.
Product Highlights:
SMOOTHBORE Performance: The signature 42mm smoothbore design eliminates turbulence and maximizes airflow velocity, providing crisp, instant throttle response and superior acceleration across the entire RPM range.
Complete “Easy” Kit: Engineered for direct bolt-on installation on Evo Big Twins, the kit typically includes the HSR42 carb, a custom manifold, an adapter to use the stock air cleaner, and specific jetting for 1990–1999 Harley models.
Fuel Management Solution: Known for easier, more consistent tuning than stock or other aftermarket carbs, the Mikuni HSR42 provides stable idle quality and precise fuel metering.
Performance Reliability: A renowned carburetor conversion that significantly reduces flat spots and sluggishness, instantly unleashing the full potential of the Evolution V-Twin engine.
Upgrade your Evo Harley with the Mikuni HSR42 Easy Kit for a noticeable, reliable boost in power and performance.
Mikuni HSR42 Easy Carburetor Kit For Harley Big Twin Evo
Get better motorcycle performance, more power and dependability, all with the Mikuni HSR42 Easy Carburetor Kit. Replace your stock CV carb with this two-piece throttle slide that rolls on stainless bearings for smoother operation, excellent response, and easier starting. The 42mm carburetor smoothbore Venturi creates great airflow, while the enlarged needle and seat provide extended full-throttle operation. The adjustable accelerator pump gives you instant throttle response at any RPM, and the light throttle return spring makes for easy pull operation. The Easy Carburetor Kit works with stock manifold and throttle cables, choke cable and air cleaner. This kit includes the carb adaptor. High-flow air filter is recommended for maximum performance.
Features
Replaces stock CV carb
Stainless bearings
Pre-jetted 42mm carburetor smoothbore
Enlarged needle and seat
Instant throttle response at any RPM
Easy pull operation
Works with stock manifold and throttle cases
Includes carb adaptor
Use with high-flow air filter
| Product Style | AmericanV-twin Item # | Catalog Number | Store Sku | MFR. Product # | Availability |
|---|---|---|---|---|---|
| Mikuni HSR42 Easy Carburetor Kit For Harley Big Twin Evo 1990-1999 | 10222251 | 401-130 | 340425 | 42-7 | In Stock: Ships within 24 hours |
This Product Fits
Harley Davidson
Dyna Convertible FXDS 1994, 1995, 1996, 1997, 1998
Dyna Glide Custom FXDC 1992
Dyna Glide Daytona FXDB-D 1992
Dyna Glide Sturgis FXDB-S 1991
Dyna Low Rider FXDL/I 1993-1998
Dyna Super Glide FXD/I 1995, 1996, 1997, 1998
Dyna Wide Glide FXDWG/I 1993-1998
Electra Glide Classic FLHTC/I 1990-1998
Electra Glide Sport FLHS 1990, 1991, 1992, 1993
Electra Glide Standard FLHT/I 1990-1998
Electra Glide Ultra Classic FLHTCU/I 1990-1998
FXR2 CVO/SE 1999
FXR3 CVO/SE 1999
FXR4 CVO/SE 2000
Low Glide/Low Rider FXRS 1990, 1991, 1992, 1993
Low Rider Custom FXLR 1990, 1991, 1992, 1993, 1994
Low Rider Sport FXRS-SP 1990, 1991, 1992, 1993
Road Glide FLTR/I 1998
Road King Classic FLHRC/I 1998
Road King FLHR/I 1994, 1995, 1996, 1997, 1998
Softail Bad Boy Springer FXSTSB 1995, 1996, 1997
Softail Custom FXSTC/I 1990-1999
Softail Deuce FXSTD/I 1999
Softail Fat Boy FLSTF/I 1990-1999
Softail Heritage Classic FLSTC/I 1990-1999
Softail Heritage FLST/I 1990
Softail Heritage Springer FLSTS/I 1997, 1998, 1999
Softail Night Train FXSTB/I 1999
Softail Nostalgia FLSTN/I 1993
Softail Special FLSTN/I 1994, 1995, 1996
Softail Springer FXSTS/I 1990-1999
Softail Standard FXST/I 1990, 1999
Sport Glide FXRT 1990, 1991, 1992
Super Glide FXR 1990, 1991, 1992, 1993, 1994
Tour Glide Classic FLTC/I 1990, 1991
Tour Glide Ultra Classic FLTCU/I 1990-1996
